Abstract

The fine structure of haustoria isolated from cucumber leaves infected with powdery mildew (Sphaerotheca fuliginea) was studied. Electron microscopy showed a haustorial body of 5–7 μ which contains many mitochondria and is surrounded by an electron lucent sheath of up to 4 μ in thickness. The sheath is limited by a heavily invaginated membrane of about 0.03 μ. The central body is connected with the sheath membrane by fingerlike convoluting protrusions.

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References

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